I believe
kill 'INT', $pid
will not send a keyboard interrupt to the other process when on Windows. It
should kill the process, but it looks to me that will not work either.
I tried the bellow code in a cmd console and neither the explicit call to kill(), nor the hardware keyboard ^C press were passed on to the child:
perl -MIPC::Open2 -E "my($pid, $in); $pid = open2('>&' . fileno(STDOUT), $in, 'cmd', '/C', 'PowerShell', '-Command', 'Sleep', '7;', 'Echo', 'Exiting'); $SIG{'INT'} = sub { kill 'INT', $pid if $pid }; sleep 3; $SIG{'INT'}->(); waitpid $pid, 0"
or just the perl code:
my($pid, $in);
$pid = open2('>&' . fileno(STDOUT), $in, 'cmd', '/C', 'PowerShell', '-Command', 'Sleep', '7;', 'Echo', 'Exiting');
$SIG{'INT'} = sub { kill 'INT', $pid if $pid };
sleep 3;
$SIG{'INT'}->();
waitpid $pid, 0
When kill() is invoked 3 seconds after running the above script, nothing happens. When I press ^C (within 7 sec of starting the command), still nothing.